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Abstract #2507

Imaging of the Spine with Metal Implants Using High-Bandwidth RF Pulses from a Local Tx/Rx Coil

Theresa Bachschmidt 1,2 , Johanna Schpfer 3 , Stephan Biber 2 , Peter Jakob 1 , and Mathias Nittka 2

1 Department of Experimental Physics 5, University of Wrzburg, Wrzburg, Germany, 2 Magnetic Resonance, Siemens AG, Erlangen, Germany, 3 Corporate Technology, Siemens AG, Erlangen, Germany

Spinal fusion is a common surgery, which often requires follow-up treatments. However, the compensation of metal-induced through-plane distortion is time-consuming and its application in clinical routine is limited. Distortion through-plane is even enhanced at 3T compared to 1.5T and demands reduction before it is corrected; it scales inversely with the bandwidth of the RF pulse. Local transmit coils feature higher peak B1, hence enable higher RF bandwidths, than whole-body birdcage coils. This work presents the capability of a prototype Tx/Rx spine coil with respect to minimizing through-plane distortion. RF bandwidths of 3.3 kHz can decrease time-consuming artifact compensation significantly.

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